Double-component pouring sealant injection device

Abstract

The utility model relates to a bi-component pouring sealant injection device which is used for injecting sealant into a photovoltaic module junction box, the bi-component pouring sealant injection device comprises a sealant injection pipe, the sealant injection pipe comprises a first cavity used for injecting A-component sealant and a second cavity used for injecting B-component sealant, the first cavity and the second cavity are each provided with a storage cavity, and the storage cavities are communicated with the first cavity and the second cavity. The top end of the storage cavity is provided with a glue injection port, the bottom end of the storage cavity is provided with a glue outlet, the glue outlet is provided with a glue outlet valve, a downward pressing assembly capable of moving up and down is arranged in the storage cavity, the downward pressing assembly is used for pressing pouring sealant downwards to the glue outlet and discharging the pouring sealant, and a pressure sensor is arranged on the downward pressing assembly. Therefore, the proportion and the glue amount of the AB bi-component pouring sealant can be monitored in real time, the problems of diode exposure and metal electric appliance element exposure are solved, and the problems of assembly failure and potential safety hazards are avoided; risk output can be prevented in time, and reworking cost and secondary adverse risks caused by reworking are reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of photovoltaic modules, and in particular to a two-component potting glue injection device. Background Art

[0002] Photovoltaic modules convert light energy into electricity through the photovoltaic effect. The electricity generated by the modules is transmitted and conducted through the junction box. Currently, a two-component potting compound (AB) is primarily used to seal the interior of the junction box, primarily to seal metal components and dissipate heat from the diode chip. Component A potting compound primarily consists of a polymer and thermally conductive and flame-retardant materials, while component B potting compound primarily consists of a crosslinker and catalyst. During the module production process, the potting compound is a mixture of component A and component B, which are then cured in a specific ratio. Therefore, the ratio and mixing quality of the AB two-component potting compound play a crucial role in module reliability.

[0003] In the related art, the AB two-component potting glue enters the mixing hose through their respective glue outlets through the glue filling machine for mixing. The actual glue output and ratio are not monitored, and the glue output can only be set by relying on equipment parameters. When the hose is blocked, the A component glue flows back, or the B component glue separates the glue outlet, effective monitoring cannot be performed, resulting in problems such as the AB two-component potting glue not curing, the ratio deviation, and the actual glue output deviation, which directly affect the sealing and heat dissipation effects of the component junction box. Moreover, the A component glue cures extremely slowly in the absence of a cross-linking agent or catalyst, and overflows from the junction box during the component flipping process, resulting in exposure of the metal conductor, which cannot achieve the sealing and heat dissipation effects. When the proportion of the B component glue is too high, it is easy to corrode the box body, seriously affecting the reliability and life of the component. Utility Model Content

[0004] The purpose of the present disclosure is to provide a two-component potting glue injection device to at least partially solve the problems existing in the related art.

[0005] In order to achieve the above-mentioned objectives, the present disclosure provides a two-component potting glue injection device for injecting glue into a photovoltaic module junction box, the two-component potting glue injection device includes a glue injection tube, the glue injection tube includes a first cavity for injecting component A glue and a second cavity for injecting component B glue, the first cavity and the second cavity respectively have a storage cavity, the top of the storage cavity is provided with a glue injection port, the bottom end of the storage cavity is provided with a glue outlet, the glue outlet is provided with a glue outlet valve, and a downward pressing component that can move up and down is provided in the storage cavity, the downward pressing component is used to press the potting glue down to the glue outlet and discharge it, and a pressure sensor is provided on the downward pressing component.

[0006] Optionally, the pressing assembly includes a pressing plate and a motor for driving the pressing plate to move.

[0007] Optionally, a glue injection one-way valve is provided on the pressing plate.

[0008] Optionally, the first cavity and the second cavity are arranged side by side.

[0009] Optionally, the first cavity and the second cavity have the same height.

[0010] Optionally, the volume of the first cavity is 3 to 4 times the volume of the second cavity.

[0011] Optionally, the glue outlet is located in the middle of the bottom end of the storage cavity.

[0012] Optionally, the two-component potting glue injection device further includes a controller, and the controller is electrically connected to the pressure sensor and the glue outlet valve.

[0013] Optionally, the two-component potting glue injection device further includes a mixing hose, which is used to receive the two-component potting glue in the injection hose and mix component A glue and component B glue.

[0014] Optionally, the mixing hose includes a shell, a glue inlet hole and a glue outlet hole arranged at two opposite ends of the shell, and a mixing chamber arranged in the shell, the glue inlet hole is used to receive the two-component potting glue discharged from the glue outlet, and the glue outlet hole is used to inject glue into the photovoltaic module junction box.

[0015] Through the above technical solution, the ratio of AB two-component potting glue can be monitored in real time to solve the problems of exposed diodes and exposed metal electrical components caused by unbalanced ratio of AB two-component potting glue; the amount of AB two-component potting glue can also be monitored in real time to eliminate the problem of component failure and safety hazards caused by deviation in the amount of glue; and risk output can be prevented in time, reducing rework costs and secondary defect risks caused by rework.

[0016] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0018] Figure 1 It is a top view of a glue filling machine in the prior art;

[0019] Figure 2 1 is a schematic structural diagram of a glue injection pipe in a two-component potting glue injection device provided in an exemplary embodiment of the present disclosure;

[0020] Figure 31 is a schematic structural diagram of a mixing hose in a two-component potting glue injection device provided in an exemplary embodiment of the present disclosure;

[0021] Figure 4 1 is an fh fitting line diagram of a two-component potting glue injection device provided by an exemplary embodiment of the present disclosure.

[0022] Description of Reference Numerals

[0023] 1-Injection hose; 11-First cavity; 12-Second cavity; 2-Storage cavity; 21-Injection port; 22-Discharge port; 221-Discharge valve; 3-Downward pressure assembly; 4-Pressure sensor; 5-Injection check valve; 6-Mixing hose; 61-Housing; 62-Inlet port; 63-Discharge port; 64-Mixing cavity; 1´-Discharge port for component A; 2´-Discharge port for component B DETAILED DESCRIPTION

[0024] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0025] In this disclosure, unless otherwise indicated, the directional terms "upper," "lower," "top," and "bottom" are defined based on the actual orientation of the associated components. "Inner" and "outer" refer to the outlines of the corresponding components. Terms such as "first" and "second" are used to distinguish between components and do not imply order or importance. In this disclosure, when the following description refers to the accompanying drawings, identical numbers in different drawings represent identical or similar elements unless otherwise indicated.

[0026] In the related art, refer to Figure 1 The AB two-component potting glue enters the mixing hose through the A component glue outlet 1' and the B component glue outlet 2' of the glue potting machine for mixing. The actual glue output and ratio are not monitored, and the glue output can only be set by relying on equipment parameters. This causes the ratio of the AB two-component potting glue to deviate, resulting in poor curing effect, and failure to seal the metal electrical components in the junction box and dissipate heat for the diodes. There is also a risk of corrosion to the junction box body. Deviations in the amount of AB two-component potting glue can also cause leakage of metal electrical devices and diodes, component failure due to water vapor ingress, and safety hazards. The surface drying time of conventional AB two-component potting glue is greater than 10 minutes, and the risk of poor batch potting cannot be identified and prevented in a timely manner, leading to the risk of rework and secondary defects caused by rework.

[0027] Reference Figures 2 to 4The present disclosure provides a two-component potting glue injection device for injecting glue into a photovoltaic module junction box. The two-component potting glue may include component A glue and component B glue. The two-component potting glue injection device may include a glue injection tube 1. The glue injection tube 1 includes a first cavity 11 for injecting component A glue and a second cavity 12 for injecting component B glue. The first cavity 11 and the second cavity 12 respectively have a storage cavity 2. The top of the storage cavity 2 is provided with a glue injection port 21, and the bottom of the storage cavity 2 is provided with a glue outlet 22. The glue outlet 22 is provided with a glue outlet valve 221. A downward pressing component 3 that can move up and down is provided in the storage cavity 2. The downward pressing component 3 is used to press the potting glue down to the glue outlet 22 and discharge it. A pressure sensor 4 is provided on the downward pressing component 3.

[0028] The glue component A and the glue component B are respectively delivered to the glue injection port 21 of the first cavity 11 and the second cavity 12 by the glue filling machine, and then enter the storage cavity 2. First, the glue output quantity is set according to the actual demand. Since the length and width of the storage space remain unchanged, the glue output quantity can be adjusted in height by moving the pressing component 3. Through a large number of calculation experiments, it can be concluded that when the pressing component 3 presses down a distance h, the pressure value f detected by the pressure sensor 4 basically satisfies f=-1.016+2.998h. According to Figure 4 The fitting curve and the actual glue filling and sealing effects are used to set a threshold for the data of pressure sensor 4. Specifically, the glue discharge amount can have an error, for example, an error value of ±1g is allowed in the glue discharge amount. Then, the data threshold range of pressure sensor 4 is set according to the allowable error value of the glue discharge amount. When the actual monitoring data of pressure sensor 4 meets the threshold range, the glue discharge valve 221 is opened to discharge the AB two-component potting glue and finally enter the junction box. In this way, the glue filling effect and glue amount can be monitored in real time.

[0029] Through the above technical solution, the ratio of AB two-component potting glue can be monitored in real time to solve the problems of exposed diodes and exposed metal electrical components caused by unbalanced ratio of AB two-component potting glue; the amount of AB two-component potting glue can also be monitored in real time to eliminate the problem of component failure and safety hazards caused by deviation in the amount of glue; and risk output can be prevented in time, reducing rework costs and secondary defect risks caused by rework.

[0030] The pressing assembly 3 may include a pressing plate and a motor for driving the pressing plate. The motor can drive the pressing plate up and down to press the AB component potting compound. In other embodiments, a cylinder may be used to drive the pressing plate. This disclosure does not limit the driving structure of the pressing plate.

[0031] Further, refer to Figure 2 , a glue-injection one-way valve 5 can be provided on the pressing plate. The glue at the glue injection port 21 can enter the storage chamber 2 through the glue-injection one-way valve 5.

[0032] In some embodiments, reference Figure 2 The first cavity 11 and the second cavity 12 can be arranged side by side. Specifically, the first cavity 11 and the second cavity 12 are integrally formed, with a simple structure and easy use.

[0033] Further, refer to Figure 2 The height of the first cavity 11 and the second cavity 12 can be the same. By adjusting the position of the pressing assembly 3 in the two storage cavities 2, the glue output amount can be adjusted.

[0034] Since the amount of glue used for component A is greater than that used for component B, in the embodiment of the present disclosure, Figure 2 The volume of the first cavity 11 can be 3 to 4 times the volume of the second cavity 12, and can be set according to actual needs.

[0035] Among them, reference Figure 2 The glue outlet 22 can be placed in the middle of the bottom end of the storage cavity 2 to facilitate glue discharge.

[0036] In some embodiments, the two-component potting adhesive dispensing device may further include a controller electrically connected to the pressure sensor 4 and the dispensing valve 221. The monitoring data of the pressure sensor 4 is transmitted to the controller. When the actual monitoring data of the pressure sensor 4 meets a threshold range, the controller controls the dispensing valve 221 to open, thereby discharging the AB two-component potting adhesive from the dispensing port 22.

[0037] As an exemplary implementation of the present disclosure, refer to Figure 3 The two-component potting adhesive injection device may further include a mixing hose 6 for receiving the two-component potting adhesive from the injection hose 1 and mixing component A and component B. Component A in the first cavity 11 and component B in the second cavity 12 are injected from the glue outlet 22 into the mixing hose 6 for mixing.

[0038] Specifically, refer to Figure 3 The mixing hose 6 may include a shell 61, a glue inlet hole 62 and a glue outlet hole 63 arranged at two opposite ends of the shell 61, and a mixing chamber 64 arranged in the shell 61. The glue inlet hole 62 is used to receive the two-component potting glue discharged from the glue outlet 22. After the component A glue and the component B glue are discharged from the glue outlet 22, they enter the mixing chamber 64 for mixing. The glue outlet hole 63 is used to inject glue into the photovoltaic module junction box.

[0039] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0040] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0041] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A two-component potting glue injection device for injecting glue into a photovoltaic module junction box, characterized in that: The two-component potting glue injection device includes a glue injection tube, which includes a first cavity for injecting component A glue and a second cavity for injecting component B glue. The first cavity and the second cavity respectively have a storage cavity. The top of the storage cavity is provided with a glue injection port, and the bottom of the storage cavity is provided with a glue outlet. The glue outlet is provided with a glue outlet valve. A downward pressing component that can move up and down is provided in the storage cavity. The downward pressing component is used to press the potting glue down to the glue outlet and discharge it. A pressure sensor is provided on the downward pressing component.

2. The two-component potting glue injection device according to claim 1, characterized in that: The pressing assembly includes a pressing plate and a motor for driving the pressing plate to move.

3. The two-component potting glue injection device according to claim 2, characterized in that: The pressing plate is provided with a glue-injection one-way valve.

4. The two-component potting glue injection device according to claim 1, characterized in that: The first cavity and the second cavity are arranged side by side.

5. The two-component potting glue injection device according to claim 4, characterized in that: The first cavity and the second cavity have the same height.

6. The two-component potting glue injection device according to claim 1, characterized in that: The volume of the first cavity is 3 to 4 times the volume of the second cavity.

7. The two-component potting glue injection device according to claim 1, characterized in that: The glue outlet is located in the middle of the bottom end of the storage cavity.

8. The two-component potting glue injection device according to claim 1, characterized in that: The two-component potting glue injection device further includes a controller, which is electrically connected to the pressure sensor and the glue outlet valve.

9. The two-component potting glue injection device according to any one of claims 1 to 8, characterized in that: The two-component potting glue injection device also includes a mixing hose, which is used to receive the two-component potting glue in the injection hose and mix component A glue and component B glue.

10. The two-component potting glue injection device according to claim 9, characterized in that: The mixing hose includes a shell, a glue inlet hole and a glue outlet hole arranged at two opposite ends of the shell, and a mixing chamber arranged in the shell. The glue inlet hole is used to receive the two-component potting glue discharged from the glue outlet, and the glue outlet hole is used to inject glue into the photovoltaic module junction box.

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